geschwindigkeitskommutationsverfahren for a mehrpoligen electric motor with constant flow and lüftersatz with geschwindigkeitskommutation after this procedure.

摘要

The invention proposes a method of switching speeds for a direct current electric motor (m) at constant flow of the type in which the armature is inductive winding having n channels, each of which is fed by a brush (b1, b2, b3, b4), a process in which a speed of rank i ranging between 1 and n - 1 is obtained by connecting a group of i + 1 brushes to the terminals of the direct current supply source of the engine, characterized in that it consists in modifying the state of connection of the brushes as a function of a control law, by modifying the composition of the group of i + 1 brushes to be connected to the obtaining of a speed of rank i and / or by interrupting the connection of one of the two consecutive brushes connected to said blade before, during a switching speeds.